class Student {
    public String name;
    public String gender;
    public int age;
    public double score;
    private static String classRoom = "109";

    public Student(String name, String gender, int age, double score) {
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.score = score;
    }

    public static String getClassRoom() {
        return classRoom;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", gender='" + gender + '\'' +
                ", age=" + age +
                ", score=" + score +
                '}';
    }
}

public class Test2 {
    public static void main(String[] args) {
        Student s1 = new Student("Li leilei", "男", 18, 3.8);
        Student s2 = new Student("Han MeiMei", "女", 19, 4.0);
        Student s3 = new Student("Jim", "男", 18, 2.6);
        System.out.println(Student.getClassRoom());
        System.out.println(s1);
        System.out.println(s2);
        System.out.println(s3);

    }
}
